Description
2014 GMC Sierra 4.3L ECM / ECU – VIN Programmed | Updated
This Engine Control Module (ECM / ECU) is a genuine OEM replacement for all 2014 GMC Sierra 4.3L models.
Each unit is VIN-programmed, updated, and fully tested.Built to OEM standards for reliability, calibration accuracy, and long-term performance.
Strict Testing & Quality Assurance
This is not a brand-new unit. It is a rebuilt unit that is inspected, refreshed, and fully tested before shipping.
Testing includes communication, CAN-bus, sensor signal, power circuit, flash memory, and reliability checks.
Important Note
If your vehicle does not have an IMMO or PATS system, this unit will be directly plug&play.
If your vehicle has an IMMO or PATS system, it will require a key relearn after installation. You can visit your local locksmith for help.
We also offer a full cloning service. We transfer all security data to the replacement unit, so it will be a plug&play installation.
For all European cars, Hyundai, and Kia vehicles, we recommend adding our cloning service as a bundle.
For American and Japanese cars, we recommend doing a key relearn on-site.
Contact Us
Email: info@fixecm.com
Phone: Local: 647-247-8555 | Toll-Free: 1-800-915-5566
Dominic Scott –
I was impressed with how quickly the ECM arrived after I placed my order—shipping was definitely speedy. The unit was plug-and-play and fit perfectly in my 2014 GMC Sierra, making installation straightforward. Choosing this service saved me a ton compared to dealer prices, and the communication throughout the process was clear and helpful. Overall, a smooth experience and a great value for a quality programmed ECU.
Kyle Nichols –
I ordered the 12672963 ECM for my 2014 GMC Sierra, and I’m really impressed with how smoothly everything went. The unit came already VIN programmed, which made installation straightforward and hassle-free. Shipping was fast and reasonably priced, and their team kept me informed throughout the process. The engine runs perfectly now, and the quality of the part is top-notch.
Eric Murray –
I was really impressed with how smoothly everything went with this ECM for my 2014 GMC Sierra. The unit arrived quickly, and the best part was that it came VIN programmed and ready to go—no extra work needed on my end. Shipping was free, which was a nice bonus, especially given the part’s value. I had a few questions before ordering, and the team responded promptly, making me feel confident about my purchase. Once installed, my truck ran perfectly, no issues at all. Definitely recommend this seller if you want a hassle-free experience.
Caleb Bates –
Fast shipping and the plug-and-play unit worked perfectly, saving me a bundle compared to dealer prices. Installation was smooth and the whole process was hassle-free.
Dylan Gonzalez –
Received the programmed ECM quickly with free shipping, and it fit perfectly in my 2014 GMC Sierra—very impressed with the hassle-free setup.
Steven Graham –
I was really impressed with how quickly this ECM arrived—shipping was surprisingly fast. The unit was completely plug-and-play, which made installing it a breeze. I was worried about the programming, but it was already matched to my VIN, so I just swapped it out and my 2014 GMC Sierra fired right up. The whole process went smoothly without any hiccups. Choosing this over going to the dealer saved me a ton of money, and the customer service team was super helpful when I had questions. Definitely a great value and professional setup.